Mandrill

Mandrill Usage Statistics · Download List of All Websites using Mandrill

Mandrill is an email infrastructure service. Detailed analytics offer insight to measure email performance.

Transactional Email

Mimecast

Mimecast Usage Statistics · Download List of All Websites using Mimecast

Cloud services for Microsoft Exchange designed to remove risk, lower costs and help businesses make sense of their email data.

Business Email Hosting

Proofpoint

Proofpoint Usage Statistics · Download List of All Websites using Proofpoint

Proofpoint provides SaaS and on-premises email security, email archiving and data loss prevention solutions for enterprises.

Secure Email

MailChimp SPF

MailChimp SPF Usage Statistics · Download List of All Websites using MailChimp SPF

This site has an SPF record for MailChimp managed email sending.

Campaign Management

SPF

SPF Usage Statistics · Download List of All Websites using SPF

The Sender Policy Framework is an open standard specifying a technical method to prevent sender address forgery.

Google Apps for Business

Google Apps for Business Usage Statistics · Download List of All Websites using Google Apps for Business

Web-based email, calendar, and documents for teams. Renamed to Google Apps for Work, but now known as G Suite from Google Cloud.

Business Email Hosting

DMARC

DMARC Usage Statistics · Download List of All Websites using DMARC

A technical specification created by a group of organizations that want to help reduce the potential for email-based abuse

DMARC

Amazon Route 53

Amazon Route 53 Usage Statistics · Download List of All Websites using Amazon Route 53

Amazon's scalable DNS web service system.

Enterprise DNS